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Shwetak Patel, Endowed Professor at the University of Washington, stated in a press release that patients just have to call a number, blow into the phone, and the cellular network will give you your test results.

By exhaling as hard as they can onto the phone, algorithms that the researchers developed will analyze the data from the pressure exerted on the phone’s microphone. The result is an accurate measurement of the patient’s lung health.

Moreover, the researchers wanted the functionality to be available around the world through any type of phone, whether it is a smartphone or even a pay phone.